Mesoscale Discussion 1871

Issued

Sep 11, 2013, 11:42 AM EDT (15:42 UTC)

Expired

Sep 11, 2013, 12:45 PM EDT

In force

63 min

Issued by

the Storm Prediction Center

Chance of a watch

80%

The State College radar (KCCX), 111 km from the middle of the area, began a volume at 15:41 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

• Severe Thunderstorm Watch 520Sep 11, 12:35 PM EDT
• Severe Thunderstorm Watch 521Sep 11, 2:35 PM EDT

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Mesoscale Discussions in Pennsylvania, 2013Mesoscale Discussions in New York, 2013Mesoscale Discussions in Ohio, 2013Every mesoscale discussion in 2013

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.